Features 1、SG90 9G micro servo, translucent body, lightweight, low noise. 2、40A ESC, safety arming function, throttle calibration function, support multiple program methods. 3、Compatible with lithium batteries. The time can be changed to suit different brushless motors. 4、Comprehensive protection, low pressure cut‑off protection/overheat protection/throttle signal loss protection. 5、Wonderful accessories set for remote control aircraft. Item type: Remote Control Aircraft Accessory Material: Plastic + Metal Color: As picture shown Weight: Approx. 160g SG90 9g servo parameters: Size: Approx. 21.5x11.8x22.7mm/0.8x0.5x0.9in No-load speed: 0.12 seconds / 60 degrees (4.8 V) Locked-rotor torque: 1.5-1.7kg/cm (4.8V-6V) Working temperature: -30℃ ~ + 60℃ Dead zone setting: 5 microseconds 2217 motor specifications: Size: Approx. 27.8x32mm/1.1x1.3in Shaft diameter: Approx. 4 mm/0.16in KV: 2300KV 40A ESC specifications: Continuous current: 40A Maximum current: 55A (10S) Power input: 2 ~ 4pcs lithium battery (battery not included) BEC output: 5V @ 3A (linear regulator mode-linear mode) Maximum speed: 210,000 rpm for a 2-pole motor, 7000 rpm for a 6-pole motor, 35,000 rpm for a 12-pole motor Application: RC remote control drone Package List 1 x Motor 2 x Propeller 2 x Servo 1 x ESC 1 x Motor base 1 x Projectile heads 6 x Servo arm 1 x Fixing belt 10 x Screw 2Rows x Propeller washer